Your country (whichever one it is) doesn't have enough ICU beds for 10% of people over 70 -- it probably has orders of magnitude fewer available beds -- and note that people who don't die can still end up in hospital for weeks and requiring a respirator, increasing that percentage of beds required.

My amateur understanding is that accelerated contagion of COVID-19 will destroy your country's health infrastructure, and then many people who don't have COVID-19 will start dying too because healthcare can't reach them. That's why delaying infection is so valuable. It's not just about the direct symptoms that most people get.